J. R. MALLOCH 267 



Puparium. — Glossj' dark red. Almost C5'liiidrical, slightly tapered at each 

 end, surface smooth except narrowly at incisions between segments, where 

 there are many close fine striae, the ventral surface with microscopic striae 

 on the greater part of surface; a rather broad band of microscopic points on 

 anterior margin of each ventral segment which tapers to a point on each side. 

 Anterior respiratory organs small, pale, with six branches which are visible 

 only under a high jiower lens and are arranged vertically; metathoracic spir- 

 acles elevated, slender, each about three times as long as its diameter, slightly 

 curved and tapered apically; anal respiratory discs sessile, the inner part with 

 the slits elevated slightly above the disc, the slits small, radiating, distance 

 between bases of discs equal to 1.5 times the diameter of one disc; apex of 

 al)domen with some irregularly arranged sharp ridges, two of which surround 

 the spiracular discs laterally, but at a consideraljle distance from them, the 

 other ridges connected with this circular one and extending from it longi- 

 tudinalh' or diagonally; area surrounding anal opening granulose, with some 

 fine striae on outer margins. 



Length, 8 to 9 mm. 



Type, allotype, and paraiypes. — Urbana, Illinois, !March-April, 

 1916, reared, (J. R. Malloch). Paraiypes, ten specimens, same 

 locality, iMay 28, 1890, (C. A. Hart); one specimen, Dj-ke, 

 \'irginia, July 10, 1916; one specimen, Great Falls, Virginia, 

 May 2, 1917; one specimen, Potlach, Idaho, September 9, 1912; 

 one specimen, Lacombe, Canada. Type in collection of Illinois 

 Natural History Survey. 



The above puparium description was made from puparia of the 

 type series. The larvae are predaceous and live under the bark 

 of freshly fallen trees and slightly loosened bark of trees still 

 standing. They can subsist on the sap which is present where 

 they occur, but so readily attack other larvae that they may be 

 classed as really predaceous. 



The larvae that I have found along with them at Urbana, 

 Illinois belong to the following species or families. Lonchaea 

 polita Say, L. laticornis Zetterstedt, Pachygastrinae, and Orta- 

 lidae. With the exception of the Pachygastrinae the others 

 ai'e predaceous. 



Phaonia striata (Stein) 



Aricin striata Stein, Berl. Ent. Zeitschr., 1S97, p. 179, 1S97. 



Mule.- — Black slightly shining, densely brownish gray pruinescent. An- 

 tennae black, second segment reddish; palpi fuscous, reddish basally. Thor- 

 acic dorsum quadrivittate; scutellum yellowish apically. Abdomen with a 

 })oorly defined but distinct dorsocentral black vitta, and, when seen from 

 <'crtain angles, with lateral blackish checkerings. Legs yellowish testaceous, 



TRAXS. AM. EXT. SOC, XLVIII. 



